The rule, or measuring rod, which the behaviorist puts in front of him always is: Can I describe this bit of behavior I see in terms of "stimulus and response"?

The temporary can become permanent if it serves people well.

We are all wanderers on this earth. Our hearts are full of wonder, and our souls are deep with dreams.

I don't believe in market timing. I believe in buying good companies at good prices.

We are just beginning to scratch the surface of understanding how our bodies perceive the environment.

Fate and temperament are two names for the same concept.

世界是一个非常复杂的地方，而且它并没有变得简单。